[특허]Wind turbine rotor blade with passively modified trailing edge component

General Electric Company

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Wind turbine rotor blade with passively modified trailing edge component

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F03D-001/06
미국특허분류(USC)	416/023; 416/041
출원번호	US-0267121 (2011-10-06)
등록번호	US-8506248 (2013-08-13)
발명자 / 주소	Wilson, Megan M.
출원인 / 주소	General Electric Company
대리인 / 주소	Dority & Manning, P.A.
인용정보	피인용 횟수 : 1 인용 특허 : 16

초록
▼

A wind turbine rotor blade includes a root portion and an airfoil portion extending from the root portion and defined by a leading edge and a trailing edge. The airfoil portion further includes a main foil section and a trailing edge section that is pivotally connected to the main foil section along a span-wise extending hinge line. A passive torsion element is coupled between the main foil section and the trailing edge section. The torsion element is biased to a neutral position wherein the trailing edge section is pivoted chord-wise to a low wind speed position relative to the main foil section. The trailing edge section is self-actuating from the low wind speed position to an increased wind speed position relative to the main foil section as a function of the biasing force of the torsion element and wind speed over the airfoil section.

대표
청구항
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1. A wind turbine rotor blade, comprising: a root portion;an airfoil portion extending from said root portion and defined by a leading edge and a trailing edge;said airfoil portion further comprising a main foil section having a suction side surface and a pressure side surface, and a trailing edge section that is pivotally connected to said main foil section along a span-wise extending hinge line interface;a passive torsion element coupled between said main foil section and said trailing edge section, said torsion element biased to a neutral position wherein said trailing edge section is pivoted chord-wise to a low wind speed position towards said pressure side surface of said main foil section; andsaid trailing edge section being self-actuating from said low wind speed position to an increased wind speed aerodynamic position relative to said main foil section as a function of the biasing force of said passive torsion element and wind speed over said airfoil section; andwherein said hinge line interface comprises a rounded face defined on said trailing edge section that is nested within a rounded recess defined in said main foil section. 2. The wind turbine blade as in claim 1, comprising a plurality of said pivotally connected trailing edge sections aligned span-wise along said trailing edge, each of said trailing edge sections comprising a respective said passive torsion element. 3. The wind turbine blade as in claim 1, wherein said torsion element is configured such that at a design optimum wind speed for said blade, said trailing edge section is in an in-line position with said main foil section with respect to a chord-wise axis of said blade. 4. The wind turbine blade as in claim 3, wherein said increased wind speed position is defined between said low wind speed position and said in-line position. 5. The wind turbine blade as in claim 4, further comprising a stop defined between said trailing edge section and said main foil section that prevents movement of said trailing edge section beyond said in-line position. 6. The wind turbine blade as in claim 1, wherein said torsion element comprises a torsion spring. 7. The wind turbine blade as in claim 1, wherein said torsion element comprises a resilient member preformed into said neutral position. 8. The wind turbine blade as in claim 1, wherein said main foil section extends at least 50% of the blade chord taken from said leading edge along the span of said blade. 9. A wind turbine rotor blade, comprising: a root portion;an airfoil portion extending from said root portion and defined by a leading edge and a trailing edge;said airfoil portion further comprising a main foil section and a trailing edge section that is pivotally connected to said main foil section along a span-wise extending hinge line, said hinge line delineating said main foil section from said trailing edge section;a passive torsion element coupled between said main foil section and said trailing edge section, said torsion element biased to a neutral position wherein said trailing edge section is pivoted chord-wise to a low wind speed position relative to said main foil section;said trailing edge section being self-actuating from said low wind speed position to an increased wind speed position relative to said main foil section as a function of the biasing force of said passive torsion element and wind seed over said airfoil section; andwherein said resilient member is a strip member that extends span-wise between said trailing edge section and said main foil section. 10. A wind turbine, comprising: a plurality of rotor blades, each said rotor blade having a root portion connected to a rotor hub and an airfoil portion extending radially outward from said root portion and defined by a leading edge and a trailing edge;said airfoil portion further comprising a main foil section having a pressure side surface and a suction side surface, and a trailing edge section that is pivotally connected to said main foil section along a span-wise extending hinge line interface;a passive torsion element coupled between said main foil section and said trailing edge section, said torsion element biased to a neutral position wherein said trailing edge section is pivoted chord-wise to a low wind speed position towards said pressure side surface of said main foil section; andsaid trailing edge section being self-actuating from said low wind speed position to an increased wind speed aerodynamic position relative to said main foil as a function of the biasing force of said passive torsion element and wind speed over said airfoil section; andwherein said hinge line interface comprises a rounded face defined on said trailing edge section that is nested within a rounded recess defined in said main foil section. 11. The wind turbine as in claim 10, wherein said rotor blades comprise a plurality of said pivotally connected trailing edge sections aligned span-wise along said trailing edge, each of said trailing edge sections comprising a respective said passive torsion element. 12. The wind turbine as in claim 10, wherein said torsion element is configured such that at a design optimum wind speed for said blades, said trailing edge section is in an in-line position with said main foil section with respect to a chord-wise axis of said blade. 13. The wind turbine as in claim 12, wherein said increased wind position is defined between said low wind speed position and said in-line position. 14. The wind turbine as in claim 13, further comprising a stop defined between said trailing edge section and said main foil section that prevents movement of said trailing edge section beyond said in-line position. 15. The wind turbine as in claim 10, wherein said torsion element comprises a torsion spring. 16. The wind turbine as in claim 10, wherein said torsion element comprises a resilient member preformed into said neutral position. 17. The wind turbine as in claim 16, wherein said resilient member is a strip member that extends span-wise between said trailing edge section and said main foil section. 18. The wind turbine as in claim 10, wherein said main foil section extends at least 50% of the blade chord taken from said leading edge along the span of said blade.

인용문헌 (16)

이 특허를 인용한 특허 (1)

Parker, Simon John, Method of coupling aerofoil surface structures and an aerofoil assembly.

IPC 상위 출원인

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특허 상세정보

Wind turbine rotor blade with passively modified trailing edge component

초록
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대표
청구항
▼

인용문헌 (16)

이 특허를 인용한 특허 (1)

IPC 상위 출원인

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특허 상세정보

Wind turbine rotor blade with passively modified trailing edge component

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대표청구항 ▼

인용문헌 (16)

이 특허를 인용한 특허 (1)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

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참여연구원의 다른 문헌(0)

처리중입니다.

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